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Loss of Internet Connectivity After Installing 951748 and 951746

We have received reports of customers loosing Internet connectivity after installing MS08-037 (951748 and 951746).  This issue can occur on both the server and the clients.  This issue may occur when customers are running ZoneAlarm or Check Point Endpoint Security (previously named Check Point Integrity).  Our investigation so far has shown that no other customers are affected by this issue.

If you are encountering this issue please review the following:

Watch the post for updates as we uncover more information.

Update: Please see the following post with newly discovered information that could affect your SBS servers

https://blogs.technet.com/sbs/archive/2008/07/17/some-services-may-fail-to-start-or-may-not-work-properly-after-installing-ms08-037-951746-and-951748.aspx

Comments

  • Anonymous
    January 01, 2003
    Direct copy from the SBS Blogpost here . One important comment to note is that the MaxUserPort registry

  • Anonymous
    January 01, 2003
    If you have been seeing any of the two issues below with your SBS 2003, then please follow the link to

  • Anonymous
    January 01, 2003
    The comment has been removed

  • Anonymous
    January 01, 2003
    The Official SBS Blog : Loss of Internet Connectivity After Installing 951748 and 951746: http://blogs

  • Anonymous
    January 01, 2003
    The comment has been removed

  • Anonymous
    January 01, 2003
    We had this problem with someone running Symantec Endpoint Security.  We had to uninstall KNB951748, KB951746, and KB950159.  Does anyone know if there's an update to the update?

  • Anonymous
    January 01, 2003
    [Today's post comes to us courtesy of John Bay, Damian Leibaschoff, Justin Crosby and Chris Puckett]

  • Anonymous
    July 12, 2008
    I dont have ZA or Check Point Endpoint Security installed but still have to uninstall KB951748. I suspect NOD32 2.7

  • Anonymous
    July 14, 2008
    I also ran into this and had to remove the updates to get ipsec to run. The effected server had neither zone alarm or checkpoint installed. Any word on when the updates will be updated?

  • Anonymous
    July 15, 2008
    The comment has been removed

  • Anonymous
    July 16, 2008
    The comment has been removed

  • Anonymous
    July 16, 2008
    The comment has been removed

  • Anonymous
    July 16, 2008
    After installing KB951748 on our domain controllers, Apple OS X 10.5 client machines are having difficulties logging in/binding to the domain.

  • Anonymous
    July 16, 2008
    We are running Filezilla server on Win XP Pro, and have been getting continual '425 Cannot open data connection' messages when a 'List' command is sent from the client.  AllTel customer support says they have been 'inundated' with calls, and they pointed us to KB951746.  Uninstalling it seems to be working.

  • Anonymous
    July 23, 2008
    .. ok guys i have been having this prob as well .. i will follow the blogs and un-istall these updates. we have a network using SBS 2003 sp1 .. with clients running vista and xp sp2.. both clients have been affected. We also employ Symantec Endpoint Protection Manager and Client (v11.0.2010.25) A temp fix was done by assigning each of the affected users a static IP address. I will uninstall the updates and post the results. Thanks once again guys.

  • Anonymous
    July 23, 2008
    .. ok guys i have been having this prob as well .. i will follow the blogs and un-istall these updates. we have a network using SBS 2003 sp1 .. with clients running vista and xp sp2.. both clients have been affected. We also employ Symantec Endpoint Protection Manager and Client (v11.0.2010.25) A temp fix was done by assigning each of the affected users a static IP address. I will uninstall the updates and post the results. Thanks once again guys. Nb: I will also uninstall KB950159 as i have read it can cause probs on the network aswell.

  • Anonymous
    August 06, 2008
    The comment has been removed